IDX=kmeans(mgd,2); I need help that how to display next output image .

my project is on text detection G is my input gray image and mgd is maximum gradient difference and k=2which means text and non text. IDX is a vector of value 1,2.

Answer 1

[Image Analyst]

I didn't understand much of that, but you can use image(), imshow(), or imagesc() to display images.

See my image segmentation tutorial if you'd like to crop out chunks of an image and display them individually. http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862

[Akshatha]

imshow(idx) I cant give bcoz idx is a vector with value 1 and 2.so I displayed like if idx==2 G;tat is the gray input image; else G=0; end I got output image as: Now I need only text out of it how can I do it. please help me.

[Image Analyst]

You can get the text by cropping to know rows and columns. Or you can get all bright regions by thresholding:

binaryImage = grayImage > 128; % or whatever value you want.

but there is no OCR toolbox for MATLAB.

[Akshatha]

 is that method correct that how I displayed the output image and any other method to display it if so please tell me.

[Image Analyst]

That does not display anything. You need to use image() or imshow() to display the array.

[Akshatha]

I displayed the output but I have a doubt whether that method is correct